| 燃煤微细颗粒迁移过程的动力学 |
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| 引用本文： | 耿珺,柳朝晖,张丰豪,郑楚光. 燃煤微细颗粒迁移过程的动力学[J]. 化工学报, 2006, 57(2): 292-299 |
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| 作者姓名： | 耿珺 柳朝晖 张丰豪 郑楚光 |
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| 作者单位： | 华中科技大学煤燃烧国家重点实验室,湖北,武汉,430074;华中科技大学煤燃烧国家重点实验室,湖北,武汉,430074;华中科技大学煤燃烧国家重点实验室,湖北,武汉,430074;华中科技大学煤燃烧国家重点实验室,湖北,武汉,430074 |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | 基于矩方法将燃煤生成的典型多分散性颗粒系统分为粗颗粒和细颗粒两个模态，构造了较完整的颗粒物迁移过程的计算模型.在考虑细颗粒自身的布朗碰撞凝并过程、粗颗粒自身的非均相凝结过程以外，还重点考虑了细颗粒向粗颗粒表面的扩散，即粗颗粒对细颗粒的捕集过程.以此为基础，对典型煤燃烧环境中细颗粒的数密度分布变化规律进行了预报与分析.
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| 关 键 词： | 矩方法 多分散性系统 颗粒尺寸分布 |
| 文章编号： | 0438-1157（2006）02-0292-08 |
| 收稿时间： | 2005-01-05 |
| 修稿时间： | 2005-01-052005-03-06 |
Dynamics of behavior of fine particulate matter in pulverized coal combustion |
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| GENG Jun,LIU Zhaohui,ZHANG Fenghao,ZHENG Chuguang. Dynamics of behavior of fine particulate matter in pulverized coal combustion[J]. Journal of Chemical Industry and Engineering(China), 2006, 57(2): 292-299 |
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| Authors: | GENG Jun LIU Zhaohui ZHANG Fenghao ZHENG Chuguang |
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| Affiliation: | State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, Hubei, China |
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| Abstract: | Based on the concept of the moment method, the poly-dispersed particulate matter (PM) generated during pulverized coal combustion was partitioned into fine-mode and coarse-mode. A set of computation models for describing the behavior of particle size distribution (PSD) evolution was then developed, which considered the effects of the Brownian coagulation of fine-mode, the heterogeneous condensation on the surface of coarse-mode.The influence of capture of fine-mode particles on the surface of coarse-mode particles was specially investigated.The models were then used to make prediction and analysis of the PSD evolution of fine PM in typical coal combustion environment. |
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| Keywords: | moment method poly-disperse system particle size distribution |
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